Digital audio adda 2402 Скачать руководство пользователя страница 18

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Cross-talk:

Cross-talk at 997 Hz, 3 dB Fs

< 100dB

Processing delay:

Processing delay

2,0 ms

Frequency response

44,1 to 48 kHz

18 Hz-19,0 kHz

44,1 to 96 kHz

18 Hz-21,0 kHz

Digital to Digital Audio Conversion

Dynamic range

When measured A-weighted the dynamic range is bet-

ter than 112 dB.

Linearity

Linearity better than +/- 0,5 dB down-to –110 dB.

Insertion gain:

At sample-rates from

32 to 48kHz:

-1,0 dB

64 to 96kHz:

-1,5 dB

Digital Audio Denmark

A-D D-A Freqquency Response

-100

+20

-90

-80

-70

-60

-50

-40

-30

-20

-10

+10

50k

10k

15k

20k

25k

30k

35k

40k

45k

Содержание adda 2402

Страница 1: ...ADDA 2402 User manual...

Страница 2: ...sources such as radiators heat registers or other products that produce heat 8 The product should be connected to a power supply only of the type described in the operating instructions or as marked...

Страница 3: ...e without notice Digital Audio Denmark a s shall not be liable for technical or editorial errors contained herein nor for incidental or consequential damages resulting from the furnishing performance...

Страница 4: ...ync input 10 USE THE ADDA 2402 AS A SMALL ANALOG DIGITAL CROSS FIELD 10 3 OPERATION 11 FRONT PANEL CONTROLS 11 Analog Input 11 Digital Input 11 Digital Output Source 11 Sample Rate 12 Dither 12 Sync 1...

Страница 5: ...6...

Страница 6: ...ias components in the digital signal eliminates the risk of generation of Alias Intermodulation Distortion AID 4 The D A converter converts a digital audio signal to a high quality analog signal havin...

Страница 7: ...8...

Страница 8: ...correctly shielded cable of good quality for all external connections when installing the ADDA 2402 For the power connection a normal un shielded cable can be used Make sure that the XLR Phono and Ja...

Страница 9: ...ll of them to the digital output on your DAT recorder your CD player or and your harddisk recording system and use the front panel to switch between the input sources You will also find a Digital Outp...

Страница 10: ...nt panel control the mode of operation of the ADDA 2402 All settings are shown by light diode indicators LEDs Each time a button is activated the corresponding mode will change between the possible se...

Страница 11: ...to Int Sync If the signal is re established the ADDA 2402 will automatically switch to the selected source unless the synchronisation mode has been changed It is possible to detect the sample rate of...

Страница 12: ...m the noise floor will thus be below 104 dBrel A to the nominal level of 6dBu 0dBrel 24 bit ADC XLR Amp in in Amp in Jack 18dBFs Fast Peak data clock Input level L R 4dBFs Analog Input Source XLR inpu...

Страница 13: ...14...

Страница 14: ...onse has a Stop band attenuation of 117 dB at half the sampling fre quency thus eliminating high frequency aliasing Dynamic range The Dynamic Range is better than 117 dB A weighted at 44 1 kHz samplin...

Страница 15: ...50 20 40 30 20 10 0 10 dBu Residual noise The residual noise floor is better than 140 dB Digital Audio Denmark A D Residual Noise 160 0 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 d B F S 20 20...

Страница 16: ...n 140 dB measured as a FFT Digital Audio Denmark level 60 dBFS 150 0 140 130 120 110 100 90 80 70 60 50 40 30 20 10 d B u 0 20k 2k 4k 6k 8k 10k 12k 14k 16k 18k Hz D A Dynamic range 17 Processing delay...

Страница 17: ...z sampling 120 40 115 110 105 100 95 90 85 80 75 70 65 60 55 50 45 d B r A 50 0 45 40 35 30 25 20 15 10 5 dBFS Linearity Linearity better than 0 5 dB down to 105 dB The output level is relative to 18...

Страница 18: ...o Digital Audio Conversion 19 Dynamic range When measured A weighted the dynamic range is bet ter than 112 dB Linearity Linearity better than 0 5 dB down to 110 dB Insertion gain At sample rates from...

Страница 19: ...20...

Страница 20: ...20 k Ohm Max Input Level Balanced 18 dBu Max Input Level Un balanced 4 dBu ANALOG OUTPUTS Connectors XLR pin 2 hot pin 3 cold pin 1 ground Jack Impedance Balanced 40 Ohm Impedance Un balanced 20 Ohm...

Страница 21: ...22...

Страница 22: ...se of this as a convenient reference signal EN50082 EN 50082 1 Electromagnetic compatibility generic immunity standard part 2 Residential commercial and light industry Published by CENELEC 1992 Note t...

Страница 23: ...s now that when new a tonal frequencies are added to the signal due to aliasing distortion such signals will mix very badly with the rest of the program and thus be audiable The important fact of this...

Страница 24: ...existing frequencies fim f1 f2 If two frequencies are denominated f1 and f2 where f2 f1 and assuming f2 2f1 the modulation frequencies generated are as shown in Table 1 IM distortion will appear up to...

Страница 25: ...d loudspeakers have lower distortion but most hi fi speakers will have IM distortion thus giving audible AID The only way to eliminate the problem with AID is to apply stop band filtering on the A D c...

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